[INFO] cloning repository https://github.com/michael-robbins/filemerger
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michael-robbins/filemerger" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichael-robbins%2Ffilemerger", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichael-robbins%2Ffilemerger'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d71225f56ffa8ba8609693fcf7ef8f4f20a7ada
[INFO] testing michael-robbins/filemerger against beta-2021-11-30 for beta-1.58-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichael-robbins%2Ffilemerger" "/workspace/builds/worker-26/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-26/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/michael-robbins/filemerger on toolchain beta-2021-11-30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-11-30" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/michael-robbins/filemerger
[INFO] finished tweaking git repo https://github.com/michael-robbins/filemerger
[INFO] tweaked toml for git repo https://github.com/michael-robbins/filemerger written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate git repo https://github.com/michael-robbins/filemerger already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-11-30" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bzip2-sys v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-11-30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05f0ea63eae28463103f20dc197cb1207ca6069e0e0bba04a57398a6e4f9bfdb
[INFO] running `Command { std: "docker" "start" "-a" "05f0ea63eae28463103f20dc197cb1207ca6069e0e0bba04a57398a6e4f9bfdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05f0ea63eae28463103f20dc197cb1207ca6069e0e0bba04a57398a6e4f9bfdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05f0ea63eae28463103f20dc197cb1207ca6069e0e0bba04a57398a6e4f9bfdb", kill_on_drop: false }`
[INFO] [stdout] 05f0ea63eae28463103f20dc197cb1207ca6069e0e0bba04a57398a6e4f9bfdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-11-30" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f31a24e7f1fff7ebbc24370050d1a26ef0e063588e17cba9d312719c936d681
[INFO] running `Command { std: "docker" "start" "-a" "5f31a24e7f1fff7ebbc24370050d1a26ef0e063588e17cba9d312719c936d681", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling ucd-util v0.1.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling bzip2-sys v0.1.6
[INFO] [stderr]    Compiling yaml-rust v0.4.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling regex-syntax v0.6.2
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling file-merger v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]   --> src/merge_file_manager.rs:79:18
[INFO] [stdout]    |
[INFO] [stdout] 79 |         #[derive(RustcDecodable,Debug)]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/merge_file_manager.rs:96:32
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 let metadata = try!(fs::metadata(filename));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/merge_file.rs:29:32
[INFO] [stdout]    |
[INFO] [stdout] 29 |     lines: Lines<BufReader<Box<Read>>>,
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/merge_file.rs:58:20
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let file = try!(File::open(filepath));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/merge_file.rs:59:24
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let filesize = try!(file.metadata()).len();
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/merge_file.rs:62:31
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let decompressor: Box<Read> = match file_ext.to_str() {
[INFO] [stdout]    |                               ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let delimiter_char = try!(self.parse_delimiter());
[INFO] [stdout]    |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let key_index = try!(self.parse_key_index());
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let glob_choices = try!(self.parse_glob());
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:59:26
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let cache_path = try!(self.parse_cache_file());
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:68:25
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let key_start = try!(self.parse_key_generic("key-start"));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:69:23
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let key_end = try!(self.parse_key_generic("key-end"));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:71:24
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let key_type = try!(self.parse_key_type());
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `beginning_merge_key`
[INFO] [stdout]   --> src/merge_file_manager.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             beginning_merge_key: String,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/settings.rs:38:36
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Err(failure) => panic!(failure.to_string()),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Err(failure) => panic!("{}", failure.to_string()),
[INFO] [stdout]    |                                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.80s
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5f31a24e7f1fff7ebbc24370050d1a26ef0e063588e17cba9d312719c936d681", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f31a24e7f1fff7ebbc24370050d1a26ef0e063588e17cba9d312719c936d681", kill_on_drop: false }`
[INFO] [stdout] 5f31a24e7f1fff7ebbc24370050d1a26ef0e063588e17cba9d312719c936d681
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-11-30" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be3218b880ae561cd36edeae43ed6227220089f3757153a381611e40bc25c99d
[INFO] running `Command { std: "docker" "start" "-a" "be3218b880ae561cd36edeae43ed6227220089f3757153a381611e40bc25c99d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling file-merger v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]   --> src/merge_file_manager.rs:79:18
[INFO] [stdout]    |
[INFO] [stdout] 79 |         #[derive(RustcDecodable,Debug)]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/merge_file_manager.rs:96:32
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 let metadata = try!(fs::metadata(filename));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/merge_file.rs:29:32
[INFO] [stdout]    |
[INFO] [stdout] 29 |     lines: Lines<BufReader<Box<Read>>>,
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/merge_file.rs:58:20
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let file = try!(File::open(filepath));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/merge_file.rs:59:24
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let filesize = try!(file.metadata()).len();
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/merge_file.rs:62:31
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let decompressor: Box<Read> = match file_ext.to_str() {
[INFO] [stdout]    |                               ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let delimiter_char = try!(self.parse_delimiter());
[INFO] [stdout]    |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let key_index = try!(self.parse_key_index());
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let glob_choices = try!(self.parse_glob());
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:59:26
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let cache_path = try!(self.parse_cache_file());
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:68:25
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let key_start = try!(self.parse_key_generic("key-start"));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:69:23
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let key_end = try!(self.parse_key_generic("key-end"));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/settings.rs:71:24
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let key_type = try!(self.parse_key_type());
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `beginning_merge_key`
[INFO] [stdout]   --> src/merge_file_manager.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             beginning_merge_key: String,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/settings.rs:38:36
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Err(failure) => panic!(failure.to_string()),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Err(failure) => panic!("{}", failure.to_string()),
[INFO] [stdout]    |                                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.96s
[INFO] running `Command { std: "docker" "inspect" "be3218b880ae561cd36edeae43ed6227220089f3757153a381611e40bc25c99d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be3218b880ae561cd36edeae43ed6227220089f3757153a381611e40bc25c99d", kill_on_drop: false }`
[INFO] [stdout] be3218b880ae561cd36edeae43ed6227220089f3757153a381611e40bc25c99d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-11-30" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 418fb34d818690dc553b07d1a949e46e23d529677d965d323665d1e1146f6bf3
[INFO] running `Command { std: "docker" "start" "-a" "418fb34d818690dc553b07d1a949e46e23d529677d965d323665d1e1146f6bf3", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stderr]   --> src/merge_file_manager.rs:79:18
[INFO] [stderr]    |
[INFO] [stderr] 79 |         #[derive(RustcDecodable,Debug)]
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/merge_file_manager.rs:96:32
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 let metadata = try!(fs::metadata(filename));
[INFO] [stderr]    |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/merge_file.rs:29:32
[INFO] [stderr]    |
[INFO] [stderr] 29 |     lines: Lines<BufReader<Box<Read>>>,
[INFO] [stderr]    |                                ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/merge_file.rs:58:20
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let file = try!(File::open(filepath));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/merge_file.rs:59:24
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let filesize = try!(file.metadata()).len();
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/merge_file.rs:62:31
[INFO] [stderr]    |
[INFO] [stderr] 62 |         let decompressor: Box<Read> = match file_ext.to_str() {
[INFO] [stderr]    |                               ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/settings.rs:56:30
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let delimiter_char = try!(self.parse_delimiter());
[INFO] [stderr]    |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/settings.rs:57:25
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let key_index = try!(self.parse_key_index());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/settings.rs:58:28
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let glob_choices = try!(self.parse_glob());
[INFO] [stderr]    |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/settings.rs:59:26
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let cache_path = try!(self.parse_cache_file());
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/settings.rs:68:25
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let key_start = try!(self.parse_key_generic("key-start"));
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/settings.rs:69:23
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let key_end = try!(self.parse_key_generic("key-end"));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/settings.rs:71:24
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let key_type = try!(self.parse_key_type());
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `beginning_merge_key`
[INFO] [stderr]   --> src/merge_file_manager.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |             beginning_merge_key: String,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/settings.rs:38:36
[INFO] [stderr]    |
[INFO] [stderr] 38 |             Err(failure) => panic!(failure.to_string()),
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 38 |             Err(failure) => panic!("{}", failure.to_string()),
[INFO] [stderr]    |                                    +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `file-merger` (bin "file-merger" test) generated 15 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/file_merger-106e105297fb5216)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test merge_file::tests::fast_forward ... ok
[INFO] [stdout] test merge_file_manager::tests::cache_to_vec ... ok
[INFO] [stdout] test merge_file::tests::new ... ok
[INFO] [stdout] test merge_file::tests::impl_ordering_and_equality ... ok
[INFO] [stdout] test merge_file::tests::impl_formatting ... ok
[INFO] [stdout] test merge_file_manager::tests::write_cache ... ok
[INFO] [stdout] test merge_file_manager::tests::begin_merge ... ok
[INFO] [stdout] test merge_file::tests::fast_forward_to_end ... ok
[INFO] [stdout] test merge_file_manager::tests::new_merge_file ... ok
[INFO] [stdout] test merge_file_manager::tests::retrieve_from_glob ... ok
[INFO] [stdout] test merge_file_manager::tests::retrieve_from_cache ... ok
[INFO] [stdout] test merge_file::tests::impl_iterator ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- merge_file::tests::impl_iterator stdout ----
[INFO] [stdout] thread 'merge_file::tests::impl_iterator' panicked at 'assertion failed: result.is_ok()', src/merge_file.rs:333:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55aa5b97ce9c - std::backtrace_rs::backtrace::libunwind::trace::hc534939746d0ae42
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x55aa5b97ce9c - std::backtrace_rs::backtrace::trace_unsynchronized::h6b8f882146644430
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55aa5b97ce9c - std::sys_common::backtrace::_print_fmt::h178c3a343658778c
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x55aa5b97ce9c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5321e7c94e7f76d6
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x55aa5b9a01dc - core::fmt::write::h4177df205e3207df
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/core/src/fmt/mod.rs:1149:17
[INFO] [stdout]    5:     0x55aa5b978985 - std::io::Write::write_fmt::h0f55d8f487d17094
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/io/mod.rs:1697:15
[INFO] [stdout]    6:     0x55aa5b97e8f0 - std::sys_common::backtrace::_print::he542ad00850be793
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x55aa5b97e8f0 - std::sys_common::backtrace::print::h8eef2bd9b56f47f2
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x55aa5b97e8f0 - std::panicking::default_hook::{{closure}}::h8fb907b12ce9712e
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:211:50
[INFO] [stdout]    9:     0x55aa5b97e4d6 - std::panicking::default_hook::ha5602a345e8a4e41
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:225:9
[INFO] [stdout]   10:     0x55aa5b97efa4 - std::panicking::rust_panic_with_hook::hf32fdbf39ade091f
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:606:17
[INFO] [stdout]   11:     0x55aa5b97ea52 - std::panicking::begin_panic_handler::{{closure}}::h8b40c093e364b9b7
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:500:13
[INFO] [stdout]   12:     0x55aa5b97d344 - std::sys_common::backtrace::__rust_end_short_backtrace::h3ff630d901329a35
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/sys_common/backtrace.rs:139:18
[INFO] [stdout]   13:     0x55aa5b97e9e9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:498:5
[INFO] [stdout]   14:     0x55aa5b89d921 - core::panicking::panic_fmt::h74f9fec01e0efc2d
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/core/src/panicking.rs:107:14
[INFO] [stdout]   15:     0x55aa5b89d86d - core::panicking::panic::h14b34556179bc029
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/core/src/panicking.rs:48:5
[INFO] [stdout]   16:     0x55aa5b8b84d5 - file_merger::merge_file::tests::impl_iterator::h661c0bd6ed61c369
[INFO] [stdout]                                at /opt/rustwide/workdir/src/merge_file.rs:333:9
[INFO] [stdout]   17:     0x55aa5b8b7f8a - file_merger::merge_file::tests::impl_iterator::{{closure}}::h8b36923da050cda4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/merge_file.rs:317:5
[INFO] [stdout]   18:     0x55aa5b8a43ee - core::ops::function::FnOnce::call_once::h58c9261ae1888488
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   19:     0x55aa5b9033c3 - core::ops::function::FnOnce::call_once::h1efdf8831cbe553f
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x55aa5b9033c3 - test::__rust_begin_short_backtrace::h0b35e710c36cd9a0
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/test/src/lib.rs:585:5
[INFO] [stdout]   21:     0x55aa5b901fd7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he15cbd6a049610ef
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/alloc/src/boxed.rs:1694:9
[INFO] [stdout]   22:     0x55aa5b901fd7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h46f4118d12807366
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   23:     0x55aa5b901fd7 - std::panicking::try::do_call::he72099bfb52eb35b
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:406:40
[INFO] [stdout]   24:     0x55aa5b901fd7 - std::panicking::try::h941266232d2749ab
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:370:19
[INFO] [stdout]   25:     0x55aa5b901fd7 - std::panic::catch_unwind::he5606b2d8a805991
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panic.rs:133:14
[INFO] [stdout]   26:     0x55aa5b901fd7 - test::run_test_in_process::h8c906b4487d1b96d
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/test/src/lib.rs:608:18
[INFO] [stdout]   27:     0x55aa5b901fd7 - test::run_test::run_test_inner::{{closure}}::h37ad38432d9d5cfc
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/test/src/lib.rs:500:39
[INFO] [stdout]   28:     0x55aa5b8cf49e - test::run_test::run_test_inner::{{closure}}::h75c29073a41e7ab8
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/test/src/lib.rs:527:37
[INFO] [stdout]   29:     0x55aa5b8cf49e - std::sys_common::backtrace::__rust_begin_short_backtrace::hafbfa87e07910bba
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/sys_common/backtrace.rs:123:18
[INFO] [stdout]   30:     0x55aa5b8d41d8 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h6a40b1642f9329e8
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/thread/mod.rs:484:17
[INFO] [stdout]   31:     0x55aa5b8d41d8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h570e68232d947237
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   32:     0x55aa5b8d41d8 - std::panicking::try::do_call::hdaece62c2ee09687
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:406:40
[INFO] [stdout]   33:     0x55aa5b8d41d8 - std::panicking::try::h7d3a7a09dc9de3fa
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panicking.rs:370:19
[INFO] [stdout]   34:     0x55aa5b8d41d8 - std::panic::catch_unwind::h02b55809c8e4572f
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/panic.rs:133:14
[INFO] [stdout]   35:     0x55aa5b8d41d8 - std::thread::Builder::spawn_unchecked::{{closure}}::h8a3286a479dd422d
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/thread/mod.rs:483:30
[INFO] [stdout]   36:     0x55aa5b8d41d8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2636c127e92e3a74
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   37:     0x55aa5b984003 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h992aa775811728ca
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/alloc/src/boxed.rs:1694:9
[INFO] [stdout]   38:     0x55aa5b984003 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h15f4030f59f40e4c
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/alloc/src/boxed.rs:1694:9
[INFO] [stdout]   39:     0x55aa5b984003 - std::sys::unix::thread::Thread::new::thread_start::hd83e13d4fcd38086
[INFO] [stdout]                                at /rustc/426b94d7df183ac00ed4492541d92855181e9c4e/library/std/src/sys/unix/thread.rs:106:17
[INFO] [stdout]   40:     0x7fb77c240609 - start_thread
[INFO] [stdout]   41:     0x7fb77c012293 - clone
[INFO] [stdout]   42:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     merge_file::tests::impl_iterator
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 11 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--bin file-merger'
[INFO] running `Command { std: "docker" "inspect" "418fb34d818690dc553b07d1a949e46e23d529677d965d323665d1e1146f6bf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "418fb34d818690dc553b07d1a949e46e23d529677d965d323665d1e1146f6bf3", kill_on_drop: false }`
[INFO] [stdout] 418fb34d818690dc553b07d1a949e46e23d529677d965d323665d1e1146f6bf3